Value of old Microsoft Office for Macintosh User Guides

I have recently been given a set of very old Microsoft User Guides for Microsoft Excel and Microsoft Word for Macintosh (see attached images). They are all published between 1984 and 1989.

They are all in very good condition (the folders are in almost perfect condition given their age), and I am just wondering if they are worth anything to anybody because I'm not really sure what to do with them!

My initial thought was to donate them to the Computer History Museum in Mountain View. Does anyone know if these sorts of things are worth anything and if so/not, who might want them? I don't just want to throw them out.